B21F 45/20
Of spring hooks
Official title: of spring hooks; of spring safety hooks
B21F45/20 (Of spring hooks) appears on 2 US grants and 2 published applications in this corpus.
Search patents in B21F- Granted patents
- 2
- Published applications
- 2
- Assignees
- 1
- Inventors
- 4
- Latest grant
- 10 Aug 2021
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| Year | Granted patents | Published applications |
|---|---|---|
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
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